Recent Developments in Resonant Column Testing
The resonant column method of testing soils is reviewed. Recent developments in equipment, specimen configurations, and testing schemes are presented. Some equipment can perform both resonance...

Dynamic Sediment Properties, Mississippi Delta

Forces on a Perforated Breakwater

Localized Nonlinear Effects in Soil-Structure Interaction

Internal Pressure and Building Safety
The wind-induced pressure inside buildings has a profound effect on building safety. Yet, little attention has been given to it in the past. The effect is either ignored or improperly...

Prediction and Control of Pedestrian-Induced Vibration in Footbridges
Footbridges vibrate because the forces imparted by the user are applied with the frequency of the pace and movement, however small, is therefore a forced vibration. In instances where...

Model Intercomparison of Lake Erie Storm Surge Resonance Predictions

Random Hydrodynamic Force on Dams from Earthquakes
A new solution for the hydrodynamic force on dams due to random earthquake accelerations is obtained in terms of nonstationary power spectra and mean square functions. Numerical results...

Vibration Tests of Full-Scale Earth Dam
Extensive full-scale dynamic tests, including ambient (unique in earth dam research) and forced vibration as well as popper tests were conducted on the Santa Felicia earth dam in Southern...

Plastic Models in Turbomachinery Foundation Studies
Over a period of years, the static and dynamic behavior of turbomachinery foundations have been studied with scaled plastic models. Experimental data from several investigators show the...

Field and Laboratory Determination of Soil Moduli
A field geophysical investigation was performed to determine the shear and Young's moduli as a function of depth for a site in southern Ohio. This investigation included crosshole,...

Vibration Identification in Rotating Equipment
The principal causes of vibrations in rotating machinery are discussed with particular attention given to the condition of resonance and how it affects a machine-foundation unit. Experimental...

Seismic Design Input for Secondary Systems
Acceleration floor spectra curves are commonly used as seismic design inputs for light equipment and other secondary systems. Earlier the writer had presented a method for generation of...

Wind Effects on Cooling-Tower Shells
The design of natural-draft cooling towers is dominated by wind action. With respect to the response of the structure the wind load may be divided into a static, a quasistatic, and a resonant...

Evaluation of Free-Free and Free-Fixed Resonant Column Testing Devices

Discretization of Harbor Resonance Problem
The Scope of the present note is to outline that the accuracy obtainable through this kind of approach, however, is strongly dependent on how the kernels are discretized, especially if...

Estimating Earthquake Response of Simple Hysteretic Structures
This paper examines various methods for defining effective linear systems for the earthquake response analysis of simple hysteretic structures. A broad class of approximate methods is...

Sample Disturbance and Stress-Strain Behavior
Different effects of sample disturbance were simulated in a resonant column apparatus that clearly show the change in stress-strain behavior when the sample is subjected to swelling, reconsolidation,...

Response of Laboratory Resonant Breakwaters

Estimating In Situ Shear Moduli at Competent Sites

 

 

 

 

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